Why it's true?

Question

I assign zero to variable and used this variable in 'if' statement. Why 'if' gives true?
https://code.sololearn.com/cI7gd9xYPrwm/?ref=app

Answer 1

In Ruby, only 'false' and 'nil' are evaluated as false. 0 is evaluated as true and that's why the output of your code is 1.

Answer 2

x = false
puts x ? 1 : 0
try this way
only true and false are boolean. 0 is not a boolean